diff options
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 56 |
1 files changed, 49 insertions, 7 deletions
@@ -1,4 +1,4 @@ -dnl $Id: aclocal.m4,v 1.50 2021/01/06 01:05:09 tom Exp $ +dnl $Id: aclocal.m4,v 1.52 2021/03/28 15:37:23 tom Exp $ dnl Macros for byacc configure script (Thomas E. Dickey) dnl --------------------------------------------------------------------------- dnl Copyright 2004-2020,2021 Thomas E. Dickey @@ -188,6 +188,45 @@ ifelse([$3],,[ :]dnl ])dnl ])])dnl dnl --------------------------------------------------------------------------- +dnl CF_C11_NORETURN version: 3 updated: 2021/03/28 11:36:23 +dnl --------------- +AC_DEFUN([CF_C11_NORETURN], +[ +AC_MSG_CHECKING(if you want to use C11 _Noreturn feature) +CF_ARG_ENABLE(stdnoreturn, + [ --enable-stdnoreturn enable C11 _Noreturn feature for diagnostics], + [enable_stdnoreturn=yes], + [enable_stdnoreturn=no]) +AC_MSG_RESULT($enable_stdnoreturn) + +if test $enable_stdnoreturn = yes; then +AC_CACHE_CHECK([for C11 _Noreturn feature], cf_cv_c11_noreturn, + [AC_TRY_COMPILE([ +#include <stdio.h> +#include <stdlib.h> +#include <stdnoreturn.h> +static _Noreturn void giveup(void) { exit(0); } + ], + [if (feof(stdin)) giveup()], + cf_cv_c11_noreturn=yes, + cf_cv_c11_noreturn=no) + ]) +else + cf_cv_c11_noreturn=no, +fi + +if test "$cf_cv_c11_noreturn" = yes; then + AC_DEFINE(HAVE_STDNORETURN_H, 1,[Define if <stdnoreturn.h> header is available and working]) + AC_DEFINE_UNQUOTED(STDC_NORETURN,_Noreturn,[Define if C11 _Noreturn keyword is supported]) + HAVE_STDNORETURN_H=1 +else + HAVE_STDNORETURN_H=0 +fi + +AC_SUBST(HAVE_STDNORETURN_H) +AC_SUBST(STDC_NORETURN) +])dnl +dnl --------------------------------------------------------------------------- dnl CF_CC_ENV_FLAGS version: 10 updated: 2020/12/31 18:40:20 dnl --------------- dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content @@ -541,13 +580,14 @@ fi AC_SUBST(EXTRA_CFLAGS) ])dnl dnl --------------------------------------------------------------------------- -dnl CF_GCC_ATTRIBUTES version: 23 updated: 2021/01/03 18:30:50 +dnl CF_GCC_ATTRIBUTES version: 24 updated: 2021/03/20 12:00:25 dnl ----------------- dnl Test for availability of useful gcc __attribute__ directives to quiet dnl compiler warnings. Though useful, not all are supported -- and contrary dnl to documentation, unrecognized directives cause older compilers to barf. AC_DEFUN([CF_GCC_ATTRIBUTES], [AC_REQUIRE([AC_PROG_FGREP])dnl +AC_REQUIRE([CF_C11_NORETURN])dnl if test "$GCC" = yes || test "$GXX" = yes then @@ -584,8 +624,8 @@ cat > "conftest.$ac_ext" <<EOF #define GCC_SCANFLIKE(fmt,var) /*nothing*/ #endif extern void wow(char *,...) GCC_SCANFLIKE(1,2); -extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN; -extern void foo(void) GCC_NORETURN; +extern GCC_NORETURN void oops(char *,...) GCC_PRINTFLIKE(1,2); +extern GCC_NORETURN void foo(void); int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { (void)argc; (void)argv; return 0; } EOF cf_printf_attribute=no @@ -958,7 +998,7 @@ cf_save_CFLAGS="$cf_save_CFLAGS -we147" fi ])dnl dnl --------------------------------------------------------------------------- -dnl CF_MAKE_DOCS version: 4 updated: 2015/07/04 21:43:03 +dnl CF_MAKE_DOCS version: 5 updated: 2021/01/10 16:05:11 dnl ------------ dnl $1 = name(s) to generate rules for dnl $2 = suffix of corresponding manpages used as input. @@ -987,7 +1027,7 @@ ${GROFF_NOTE}.$2.ps : ${GROFF_NOTE} [\$](SHELL) -c "tbl [\$]*.$2 | groff -man" >[\$]@ ${GROFF_NOTE} ${GROFF_NOTE}.$2.txt : -${GROFF_NOTE} GROFF_NO_SGR=stupid [\$](SHELL) -c "tbl [\$]*.$2 | nroff -Tascii -man | col -bx" >[\$]@ +${GROFF_NOTE} GROFF_NO_SGR=stupid [\$](SHELL) -c "tbl [\$]*.$2 | nroff -rHY=0 -Tascii -man | col -bx" >[\$]@ ${MAN2HTML_NOTE}.$2.html : ${MAN2HTML_NOTE} ./${MAN2HTML_TEMP} [\$]* $2 man >[\$]@ @@ -1460,7 +1500,7 @@ AC_DEFUN([CF_VERBOSE], CF_MSG_LOG([$1]) ])dnl dnl --------------------------------------------------------------------------- -dnl CF_WITHOUT_X version: 2 updated: 2020/10/04 10:05:20 +dnl CF_WITHOUT_X version: 3 updated: 2021/01/13 16:51:52 dnl ------------ dnl Use this to cancel the check for X headers/libraries which would be pulled dnl in via CF_GCC_WARNINGS. @@ -1469,6 +1509,8 @@ AC_DEFUN([AC_PATH_XTRA],[]) AC_DEFUN([CF_SAVE_XTRA_FLAGS],[]) AC_DEFUN([CF_RESTORE_XTRA_FLAGS],[]) AC_DEFUN([CF_CONST_X_STRING],[echo "skipping X-const check";])dnl +AC_SUBST(X_CFLAGS) +AC_SUBST(X_LIBS) [])dnl dnl --------------------------------------------------------------------------- dnl CF_WITH_DBMALLOC version: 7 updated: 2010/06/21 17:26:47 |